Heat treating articles



July i3, H9255.

G. H. GLMAN HEAT TREATING ARTICLES Filed Spt. 2l, 1920 GH.GLMAN HEATTREATING ARTICLES Filed Sept. 2l. 1920 3 Sheets-Sheet :i

G5. H. GELMAN iEAT TREATING ARTICLES Filed Sept. 2l. 1920 5 Sheets-Sheet.1

GEORGE H. G-ILMAN, OF BOSTON. MASSACHUSETTS.

HEAT TREATING ARTICLES.

Application led September 21, 1920. Serial No. 411,762.

My invention relates to apparatus for radiating arms 11, these armscarrying heat treating articles and particularly but not exclusively tothose for heat treating drill steels, and comprises article conveyingapparatus particularly but not exclusively adapted Yfor use in suchmachines.

My invention 'will be best understood from the 'following specification:and accompanying drawings ot a specific embodiment thereof submittedfor illustrative purposes, vfhile 'the scope of my invention will beparticularly pointed out in the appended claims.

ln the drawings I Figure l shows a drill steel carrier and parts ofaheat treating machine cooperating therewith;

Fig. 2 is an elevation of the carrier looking at Fig. 1 from the right;

Figs. 3, ll, 5, 6 and 7 respectively are sections on the lines 3 3, 4 4,5--5, 6-6 and 7--7 of Fig. 1;

Fig. 8 shows on an enlarged scale the position 'ot the parts when thegripping device is in open position;

Fig. 9 is a view corresponding to Fig. 8 with the gripping device inclosed position; and K Fig. 10 is a more or less diagrammatic vi vvshowing parts of the heat treating machine cooperating with. thecarrier.

is the details of the heat treating apparatus in general torm no part ofmy presnt invention, the same will not be described except to show howthe same cooperates with the invention claimed herein. A et"e1-ringparticularly to Figs. 1, 2 and 1U, h machine comprises a plate 1, bentto fn s. closed cylinder' and provided at its lower portions withguideivays an of tracits 2 and 3. -Straddling ate is carrier for thedrill steel 4, ,id carrier comprising the legs 5 and 6 and a portion 7connect-ing the upper ends of the legs. To the leg (i is securedthc'drill stt-el and supported by the leg 5 are the Wheels 8 and 9 whichroll along the traks. 2. The tracks just described are undula ed inorder to lower and raise tbe end of the drill steel in and out of theSeveral instru- .ies for treating the end ot the drill for example aturnaceand a quenchnli. For moving,r the .steel ll. have 'n the tracksmounted concentrically the shaft 10 and carried by the latter and forrotation therewith, l provide the pusher elements 12 which are providedWith heads 13 lor contacting the side ot the legs 5 of the carrier. Aswill be readily understood, when the shaft 10 is revolved. the pusherelements cause the carriers to move around the track. For preventing thetendency of the pusher elements to cause the carrierand its Wheels totilt, I provide the roller 14 which travels along a guideway or trackformed by a portion ot the plete between the tracks 2 and 3, the rollerbeing supported by the brackets 15 and'l carried by the legs 6.

F or removably securing the drill steel to the carrier lprovide theclips 17 and 18 and in addition thereto and for the same purpose, agripping device which also prevents the steel from sliding downwardlythrough the clips. In order to accurately position the steel on thecarrier, the clip 17 1s made in the form ot' a spring, While the clip 18is formed of such dimensions as to be nonyieldable.

The gripping `means hereinbefore reerred to as preventing the steel fromsliding through the clips comprises a rock shaft 19 carrying the levers2O and 21, said levers embracing the leg 6 and the rock shaft beingpivotedly supported on said leg4 by causingr the rock shaft to fitsemi-cylindrical bearing recesses formed respectively in the leg and bythe bent portion 2l ot the bearing' cap the latter being; secured to theleg by means ot' the bolts 2G. larried by the lever 2O is a jaw 27preferably pivotedly supported on the lever by means ot the pin Lid andto prevent excess movement ol the javi' on the pin l preferably recessthe endl portion olf'tlie jaw to torni the stop surfaces 29,A 3f), 31and 32 which cooperate witlrthe },)1o]'ecti1ig, ends 33 and 3l of atransverse pin to prevent in an obvious n1an- 11er such excess movement.Preferably the rochl shaft is biased to carlv the jaw into the positionillustrated by Fig; 9,- in which position it will be appreciated thatthel tendency of the steel to more downwardly under the influence ofgravity' causes the jaw to tightly bind against the steel. To this end lprovide a plunger 35 slidably mounted in ears 86 carried by the leg' 6of the carrier and cooperating with the plunger l provide a spring 37having at one end an abutment 38 carried by the leg and at its other endan abutment provided by the i removal, of the steel from the carrier isprevented. To prevent the turning of the rock shaft from affecting theposition of the steel and for providing an abutment for the steel actingin the opposite' direction to the jaw 27, the end 41 of the rock shaftto the right of the lever Q as viewed in Fig. is offset andI cut away toform the surfaces 43. By this means, the portion of the rock shaftadjacentA the intersection of the surfaces 43is always in contact withthe steel and Without causing movement of the rock shaft to affect theposition of the steel.

For operating the rock shaft to engage and disengage the jaw with thesteel I provide the members 44 providing the stationary cam surfaces 45yand 4G. these members being so located to position the cam surfaces 45and 46 in the path of the lever 2l carried by the rock shaft. lhen thevcarrier is moved-and the lever strikes the surface 45 it travels up thesame and slides across the cam surface 4G as illustrated byl Figs. 2, 4and 7. This movesQrthe jaw from engagement with the steel and when thelever 1 reaches the end of the surface 4G, the plunger 35 immediatelymoves the lever 2() downwardly to turn the rock shaft to carry the jawinto engagement with the steel.

Referring particularly to Figs. 1. 2 and itl in my machine I provi-de aplatform 4T which I term the loading station, in front of whichislocated one of the cam members 44 -so that when the carrier passes'b'vthe station the gripping member is open. As the carrier passes thisstation the operator places the end of the'steel on the platform andslides it into engagement with the spring clips and as the carrierleaves the station the lever'Ql' reaching the end .of the cam surface 4Gcauses the gripping device to close and securely fasten the steel to thecarrier. The carrier now passes around the track through the lvariousinstrunientalities of the machine for treating the steel and finallyreaches the platform 48 which l term the discharging station where islocated a simiout departing from the spirit of my invention.

Claims:

1. A machine for heat teating drill steels having, in combination, aheater, a quenching tank, drill steel presenting means traversing saidheater and tank and successively presenting the end portions only ofsaid steels thereto, said presenting means carrying the drill steels invertical position by engagement therewith at points intermediate theirllength, said means including drill steel gripping devices having openpositions for removal of the treated steels and reception ofnew steelsand closed positions for engaging the steels, and means independent ofthe drill steels for placing said gripping means in open position forremoval of the steels after the steels have been presented to thequenching tank and thereafter causing them to close prior to presentingnewly inserted steels to the heater.

2. A machine for heat treating drill steels having, in combination, aheater, a quenching tank, drill steel presenting means traversing saidheater and tank and successively .'esenting the end portions only ofsaid steels thereto, said presenting means carrying the drill steels invertical position by engagement therewith at points intermediate theirlength, said means including drill steel gripping devices having openpositionsl for removal of the treated steels and reception of new steelsand closed positions for engagin the steels, and means independent ofthe drill steels responsive to motion of said presenting lmeans forplacing said gripping means in open position for removal of the steelsafter the steels have been presented to the quenching tank andthereafter causing them to close prior to presenting newly insertedsteels to the heater.

3. A machine for heat treating drill steels `having` in combination, aheater, a quenching tank. drill steel presenting means traversing saidheater and tank and successively presenting the end portions only ofsaid steels thereto, said presenting -means carrying the drill steels invertical position bv engagement therewith at points intermediate theirlength. said means including drill steel gripping devices having openpositions for removal of the treated steels and reception of new steelsand-closed positions for engaging the steels, and means independentofthe drill steels including a stationary cam for placing said grippingmeans in open position for removal of the steels after the steels havebeen presented to the 'quenching tank and thereafter causing them toclose prior to presenting newly inserted steels to the heater. y i

4. A machine for heat treating drill steels having, in combination, aheater, a quenching tank, drill steel presenting means trav- Leonesasaid heater and tank and succesely presenting the end portions only of'd steels-thereto, said presenting means -frving the drill steels invertical position engagement therewith at points inter diete theirlength, said means including l steel gripping devices having open poonsfor removal o the treated steels and n "ion of new steels and closedpositions gaging the steels, a loading table travrsed by said presentingmeans and, upon lich the steels may he stood on their ends ie treatedfor gauging their position rel- 'e ine to said' means, means independentof lie steels for causing said gripping means he in open position whenat said loading -aleand to close prior to leaving said loadtable andJfor removingthe steels from s id gripping means alter the steels havebeen quenched.

A machine for heat treating drill steels having, in combination, aheater, a quenching,r tank, drill steel presenting means travcrsing saidheater and tank and successively presenting the end portions only ofsaid steels thereto, said presenting means carry.- ing the drill steelsin vertical position by en gageinent therewith at points intermediatetheir length, said means including drill steel ripping devices havingopen positions i'or cnioval of the treated steels and reception of newsteels and closed positions for engaging the'steels, a loading tabletraversed by said presenting means and upon which the steels may hestood on their ends to he treated for gauging their position relative tosaid means, means independent of the steels -for causing saidgrippingmeans to be in open position when at said loading table and toclose prior to leaving said loading table and for opening said grippingmeans aftery the steels have been quenched. v

il. A. machine for heat treating drill steels comprising, incombination, a heat treating instrumentality, means for presenting theends only of drill steels to said instrumentality and removing themtherefrom comprising a plurality of v,lrill steel carriers movableindependently of cach other, drill steel gripping means tor eachcarrier, means tor supporting said carriers and movin them past a drillsteel manipulating station, and means acting independently of thepresence ot' drill steels and responsive to motion of said carriers `forcausing said gripping means *c he opened when said carriers are at .saidion and to loe closed when they leave said s ation.

T. A schine for heat treating theends of rod like articles, having incombination, a plurality of article carriers movable inde- ;:fendentiyof each other, article gripping means for each. carrier, supportingmeans for said carriers, means for moving said cai14 ri lcy an articlemanipulating station, and

M Us

Il l) 'fill means acting. independently of the presence of an articleand responsive to motion of said carriers for causing said grippingmeans to he open when said carriers arc at said station and to he closedwhen said carriers leave said station.

` 8. ln a machine for heat treating the ends of rod-like articles, aplurality oi'. independent carriers for said articles, supporting meansfor said carriers, means for moving said carriers relatively to saidsupporting means, means for securing such articles to saidE carriers andin a vertical position, and means responsive to the motion of saidcarrieis for operating the means for securing articles to the carriersindependently of the presence of articles on said carriers.

9. ln a machine for heat treating the ends of rod-like articles, aplurality ot independent carriers for said articles, supporting meansfor said carriers, means for moving said carriers relatively to saidsupporting means, gripping means carried by said carriers and forengaging such articles when presented in vertical positions to saidcarriers, and means responsive to motion of said carriers for operatingsaid gripping means independently of the presence of articles on saidcarriers.

l0. ln a machine for heattreating the ends oit rod-like articles, aplurality of independent carriers for said articles, a loading platformor the like, said carriers, means for moving said carriers relatively tosaid supporting means to and from said platform, means for securing sucharticles to said carriers, and automatic mechanism for causing saidmeans to be open to receive said articles when said carriers are at saidplatform and to cause said articles to be secured to said carriers whenthey leave said platform.

l1. In a heat treating machine for drill steels, a closed track, meansfor conveying a drill steel along said track, releasable means forholding a drill steel tosaid first means, and automatic means forcausing said releasable means to be inoperative for holding said steelwhen said means for conveying the drill steel is in a definite relationwith said track and for causing it to he operative when in anotherdefinite relation.

12. ln a heat treating machine for drill steels, a closed track, aplurality of carriers for said drill steels and mounted on said track,means for propelling said steels about said track, means carried by seidcarriers for securing a drill steel thereto, mechanism responsive tomotion of said carriers and for Aoperating said'means, and saidmechanism heilig so arranged as to cause a steel to be secured to saidcarrier While passing over the major portion of said track and for otherportions rendering said means inoperative.

13.' ln an article carrier, a movable inemsupporting means for f lillber for gripping an article, and a support for said member so arrangedthat movenient of said article tends to force said menibcr against thearticle.

1l.; In an article carrier, a member having a jauyrarried thereby forrelative movement thereto', and means providing'a support for saidmember andso arranged that movement ofthe article tends fo move saidmember to force the jaw against the article.

15. In an article carrier, a lever havinnr a lsupport at oney side ofthe article and adapted to be inclined downwardly to a point on theopposite side of said article, and la jaw for gripping the article andcarried b the lever at such point.

16. In an article carrier, a movable member for gripping an article, aSupport for said member so arranged that movement of said article itendsto force said member against the article, and means for moving `saidmember away from the article.

17. In an article carrier, a movable member for gripping an article, asupport for said member so arranged that movement of said article tendsto force said member against the article, and means norlnally bias ingsaid member toward gripping osition.

18. In an article carrier, a movab e mem ber for gripping an article, asupport for said member so arranged that movementof said article tendsto force said member against the article, and means for moving saidmember into and out of gripping position.

19. In an article carrier, a member -having a Jaw carried thereby forrelative movement thereto. means providing a support for said member andso arranged that movement of the article tends to move said member toforce the jaw against the article, and means for moving saidfmember intoand out of gripping position.

20. Inan article carrier, a lever having a support at one side of thearticle and adapted to beinclined downwardly to a point on theoppositeiside of said article, a jaw for gripl ping the article andcarried by the lever at such point, and means for moving said lever tocarry, the jaw into and out of gripping position.'

vmeans affording an abutment for said'articles, a jaw carried in spacedrelation to said abutment, and a support for said jaw adje-- cent saidabutment and so located to permit release it.

one of saidmeans comprising a member forl grip ing snc'h article, and asupport for said mem er so arran ed that movement of saidv article tendsrto orce said member against the article. i

` 24. In a machine of the character described, an article carrier, arock shaft carried thereby, a lever carried by said shaft,

a jaw pivoted to said lever in spaced relation to said shaft whereby anarticle may be in sei-ted in such space, and automatic means for turningsaid rock shaft to move the jaw into and out of position to engage sucharticle whereby to permit the insertion and removal of such article andto secure it to the carrier.

25. In a heat treating machine, a carrier for drill steels, means forsecuring a steel to said carrier at spaced points, one of said mea-nsbeing arranged to ltightly grip said steel, and automatic mechanism forcausing sad last named means to grip a steel andv to 26. In a heattreating machine for drill steels, a carrier for said steels, a. rockshaft supported by a carrier, a lever carried .by said rock shaft, a jawcarried by said lever, means for positioning a drill steel between saidjaw and said sha-ft, and a spring for forcing said rock shaft to turn,Whereb said steel is held between said shaft andy said Jaw. Y

27. In a heat treating machine for drill steels, a carrier for suchsteels, means for moving said carrier, a means for vgauging the positionof-said steels on said carrier,-

means for holding the steel to said carrier j when the steelis presentedthereto, and other means actuated by motion of said carrier for causingsaid steel to be secured to the carrier after the steel is presentedthereto.

28. In a machine -for heat treating drilll steels, a track, a carrierhaving a Wheel engaging 'said track', kmeans engaging saidv carrier atthe side of said track for pushing it along the track, andI lmeans'preventing tilting of said wheel., l

29. In aA machine for heat treating-drill iis steels, a carrier, aguideway supporting said carrier for'movement therealong, means at theside of said guideway for pushing said by said carrier cooperating withsaidsecond guideway for preventing tilting of the car- Tier.

30. In a machine for-heattreatin drill steels, an article carrier, apair of gui' eways for supporting said carrier and permitting movementtherealong of said carrier, means at the side of said guideway forpushing said carrier., a third guideway intermediate the carrier, a'second' guideway and means carried iii tra

1,592,1360 p a f U two first mentioned, and means` supp0rted by A saidcarrier cooperating with said third' guideWa-y for preventing tilting ofthe carrier on said pairs of guideivays.

3l. In a machine of the character described, a track, a carriersupported by said track, means at the side of said carrier Ifor pushingsaid carrier along said track, and guiding means neutralizing thetendency of said first Ymentioned means to tilt the carrier.

32. -In a machine of the character described, a p air of spaced tracks,an article carrier having a pair of legs stracldlinw onev of saidtracks, Wheels cari'iedfby one ot Asaid legs and engaging said tracks,means coopei'ating with the other leg for forcing the carrier' toinove,al0ng'the tracks, and means for neutralizing the tendency of thefirst named means to tilt the carrier.

33. In a machine of the characterv de. scribed, a pair of spaced tracks,an articlev legs and engaging said "tracks, means cooperating with oneof said legs for forcing" the carrier to move along the tracks, a thirdtrack, and means carried by one of said .legs

and engaging said track for neutralizing the tenden y of the first namedmeans to tilt the carrier. p

35. In. a machine` of the character Yilescribed, a pair of'spacedtracks, an article carrier-having a pair of legs straddling one of Ysaid tracks, wheels `ttor supporting said carrier on said tracks, meanscooperating with one of said legs for forcing the carrier to move alongthe tracks, a third track, and means carried by one of said legs andengaging'said track for neutralizing the tendency 'of the first namedmeans to tilt the carrier.

36. In a machine of .the character described,'a carrier, spacedguideways for said carrier, means for pushing said carrier alongerating. with said carrier in such wise as to neutralize the tendency ofsaidmeans to tilt said carrier.

legs straddling said plate, Wheels on said carrier and riding ontlie'upper and lower ed es of said plate, means for `forcingsaid carrier'said `guidcways, and a third guidetvay coopy 37. In a machineof thecharacter de- 'i scribed, a cylindrical plate, a carrier havingto move-circumferentially about said plate,

and a third wheel for said carrier and so positioned as -to ride on thelateral surface In testimony whereof, I have signed my naine to thisspeciication;

GEORGE H. GILMAN.

of said plate and neutralize the tendency of ,""i

said carrier to tilt;

